Passat Wagon V6-2792cc 2.8L DOHC (1994)
Expansion Valve: Customer Interest
Expansion Valve - Hissing Noise
Subject:
R-134a Expansion Valve, Noisy
Models:
Passat m/y 1993 -->
Group: 87
Number: 95-01
Date: Feb. 23, 1995
File this Technical Bulletin In Repair Manual No.: W42 012 194 110
Supersedes T.B. 87-93-05 Dated 8/15/93
Condition
Expansion valve produces hissing or groaning noise under elevated system pressure.
Note:
This is a fluid noise resulting from the higher system pressure of the R-134a A/C system compared to the lower system pressure of the R-12 A/C
system.
Production
Improved expansion valve installed as of m.y.1994 production with vendor production date code:1193128 TGK (11 signifies week, 93 signifies year).
Service
If expansion valve produces a hissing or groaning noise:
- Replace expansion valve with improved valve.
Part No.: 1H0 820 679 A (production date code 1193128 TGK or later).
Note:
The Parts Department will supply only the improved expansion valve.
Caution
Part numbers are for reference only.
Always check with your Parts Department for the latest parts information.
